Home / 38,078.49-57,121.02-9,998.40

Finding the Fourth Proportional to 38,078.49, 57,121.02 and 9,998.40

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Solution

The fourth proportional to 38,078.49, 57,121.02 and 9,998.40 is: 14,998.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,078.49 : 57,121.02 = 9,998.40 : x
  2. Step 2: Convert to fraction form
    38,078.49/57,121.02 = 9,998.40/x
  3. Step 3: Cross multiply
    38,078.49x = 57,121.02 × 9,998.40
  4. Step 4: Simplify right side
    38,078.49x = 571,118,806.37
  5. Step 5: Solve for x
    x = 571,118,806.37/38,078.49
  6. Step 6: Final answer
    x = 14,998.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.